Question

cell processes and transport: mastery test
organelle
step 4
newly synthesized proteins are transported
endoplasmic reticulum
nucleus
golgi apparatus
dna is transcribed into mrna
ribosome
mrna is translated into proteins
proteins are modified, then transported away

Explanation:

Identify the targeted organelles

The image shows a diagram of a eukaryotic cell with lines pointing to specific organelles.
The top pointer points to the orange, folded membrane structure, which is the endoplasmic reticulum (specifically the rough endoplasmic reticulum).
The bottom pointer points to the pink, stacked membrane structure, which is the Golgi apparatus.

Analyze the pathway steps

The activity describes the steps of protein synthesis and transport within the cell:

• Step 1 (not fully shown but implied): Occurs in the nucleus, where DNA is transcribed into mRNA.
• Step 2 (implied): Occurs at the ribosome, where mRNA is translated into proteins.
• Step 3 (top box): Occurs in the endoplasmic reticulum, where newly synthesized proteins are transported.
• Step 4 (bottom box): Occurs in the Golgi apparatus, where proteins are modified, then transported away.

Match labels to the top box

The top box has a pointer pointing to the endoplasmic reticulum.

• Organelle: endoplasmic reticulum
• Step 3 (implied description): newly synthesized proteins are transported

Match labels to the bottom box

The bottom box has a pointer pointing to the Golgi apparatus. It is explicitly labeled "Organelle" and "Step 4".

• Organelle: Golgi apparatus
• Step 4: proteins are modified, then transported away

Answer:

Based on the cell diagram and the pathway of protein synthesis and transport:

Top Box (pointing to the endoplasmic reticulum):

• Organelle: endoplasmic reticulum
• Description: newly synthesized proteins are transported

Bottom Box (pointing to the Golgi apparatus):

• Organelle: Golgi apparatus
• Step 4: proteins are modified, then transported away